二级域名可以获取一级域名的Cookie值
二级域名下删除顶级域名下的Cookie,需要添加顶级域名的Cookie作用域
/// <summary> /// 根据cookie名称删除 /// </summary> /// <param name="cookieName"></param> public void ExpireCookie(string cookieName) { HttpCookie cookie = HttpContext.Current.Request.Cookies[cookieName]; if (cookie != null) { cookie.Expires = DateTime.Now.AddDays(-2); cookie.Domain = ".xilu.com"; HttpContext.Current.Response.Cookies.Set(cookie); } //FileAddEveryDay(path, "根据cookie名称删除:" + cookieName, true); //HttpContext.Current.Response.Cookies.Remove(cookieName); }